* Tests that multiple deltas are received.
*/
public void testUpdateSeveralDeltas() {
TransformedWaveletDelta delta2 = UTIL.noOpDelta(V2.getVersion());
OpenListener listener = mock(OpenListener.class);
m.subscribe(W1, IdFilters.ALL_IDS, "ch1", listener);
DeltaSequence bothDeltas = DeltaSequence.of(DELTA, delta2);
m.onUpdate(W1A, bothDeltas);
verify(listener).onUpdate(W1A, null, bothDeltas, null, null, "ch1");